Hose fitting



Sept. 18 1923.

M. LOUGHEAD HOSE FITTING Original Filed Jan. 23, 1923 Patented Sept. 18, 1923.

UNITED STATES MALCOLM LOUGHEAD. OF DETROIT, MICHIGAN,

T0 HYDRAULIC BRAKE COMPANY, OF LOS ANGELES, CALIFORNIA, A

OF CALIFORNIA.

Original application led .T anuary 23, 1922, Serial No. 531,141.

i4PATENT ASSIGNOR, BY MESNE ASSIGNMENTS,

CORPORATION HOSE FITTING.

Divided and this application filed March s, 1923. serial No. 623,633.

concise, and eXact description, reference` being had to the accompanying drawings, forming a part of this specification.

This invention relates to a fitting for the end of a hose and is a division of applicants prior filed application, Serial Number 531,141, filed January? 23, '1922. The object of the invention is the provision of a hose fitting that is comparatively cheap to manufacture, and simple and durable in construction, but which is so constructed that 1t may be easily applied to the hose, and when app-lied will securely engage the hose with a fluid tight fit. i

The fitting illustrated in the accompanying drawings is a hose coupling device, but I appreciate that the salient features of my invention are applicable to various other hose fittings, such as hose nozzles, hose end plugs, etc. The reinforced hose disclosed may be employed wherever a hose of great strength is desired, but is particularly designed for use in the pipe lines of fluid operated braking systems.

Since my invention will best be understood from a description read in connection with member disassociated from the parts shown in section in Figure 1; K

Figure 3 is an axial sectional view of the ho-se and coupling member; y

Figure 4 is a transverse section taken on line 44 of Figure 3;

Figure 5 is an axial sectional view of the coup ing member as it appears prior to application'to the hose, one of the elements of the coupling member being illustrated in elevation, the other element being illustrated in axial section, and

*igure 6 is a transverse section taken on line 6 -6 of Figure 5.

.Similar charactersof reference refer to similar parts throughout the several views.

Referring first to Figure 6, it will be noted that the coupling member comprises an inner element A and an outer element B. Element A is provided with a bore 7, and has an outer cylindrical surface 8, which fits snugly in the bore 9 of the outer element B. Element is furthermore provided atv its outer end with a flange or shoulder 10, which fits snugly against the adjacent end of the externally' threaded boss 11 of element B, shoulder 10 preferably being provided with an annular bevel 12. It will be understood that the threads of boss 9 are adapted to be engaged by an outer collar for the purpose of drawing beveled surface 12 tightly in engagement with a correspondingly shaped seat in a coupling member which mates the one herein illustrated and described in detail. The mating coupling member and its associated nut are illustrated at X and Y respectively. That end of element A remote from flange or shoulder 10 is preferably reduced in diameter toprovide a nipple 13, which may be inserted into the hose to which the coupling member is to be attached. Nipple 13 is provided with external flanges or annular ridges 13a- 135, which need not differ essentially from the ridges found upon ordinary hose ttings.

Element B similarly to element A is formed in one piece, and in addition to boss 11 comprises the bod portion 14 and the comparatively thin sleeve 15. It will be noted that the sleeve 15 originally curves 4outwardly away from the body portion, as

tion of the coupling to the hose,

diameter of the sleeve is slightly' greater than the outer diameter of the hose. The hose is indicated at H, being illustrated in dotted lines in Figures 5 and 6, and in full lines in Figures 1, 3 and 4.

Before applying the fitting or coupling member to a hose, the element A is placed in element B, as illustrated in Figure 5. The hose H is now slipped into sleeve 15, and around the ridged nipple 12. Sleeve 15 is now subjected to a diameter reducing operation, which eliminates the curve 15, and

lcauses the outer cylindrical surface of the sleeve to lie flush with the curved surfaces of body portion 14. The reduction in the diameter of -the sleeve may be accomplished by means of a reducing die or by a spinning operation. If preferred, the body portion 111 may be provided with oppositely located plane surfaces 14a-14, which permit element. B to be grasped by a suitable tool. The reduction of the outer diameter of sleeve 15 results in a corresponding reduction of its inner diameter, and increases its length somewhat. I prefer to so perform the diameter reducing operation as to leave the sleeve with a belled or outwardly flaring edge 15", This belled or outwardly Haring edge, together with the fact that the nipple 13 terminates a short distance within the sleeve 15, permits the hose to articulate relatively to the fitting, within certainlimits, without injury to the hose. Terminating` the nipple 13 some distance within the sleeve 15 prevents the hose being cut by the endof the nipple.

That ortion of the hose which lies between nipple 12 and sleeve 15 is very considerably compressed when the diameter of the sleeve ,is reduced in the manner herein` before explained. This compression of the hose causes the same snugly and tightly to engage the sleeve and the nipple, and results in the ridges 13a and 15c becoming embedded inthe inner and outer surfaces of the hose, respectively. lThis arrangement provides a Huid tight connection, and also enables the hose tol withstand longitudinal stresses tending to pull it. oli of 'the nipple.

A particular advantage is afforded b the fact that the elements A and B are mec anically connected together. In the present instance, this mechanical connection is afforded by the elements X and Y. Any other equivalent form of mechanical connection may be employed. In fact, I contem late that in some cases it may be desirable to form' the elements A and B from a single piece of metal. Since both the nipple 12 and sleeve 15 are in frictional Contact with the hose, it will be seen that each of these parts tends to prevent dislodgment of the other.

Element A may, of course,

any suitable material, but is preferably formed of metal. Element B is formed of any metal, such as brass, which can successfully be subjected to the diameter reducing operation hereinbefore described. I prefer to form the fitting of my invention in two parts, but appreciate that the elements A and B could b'e formed in one piece if desired.

Applicants hose fitting may be employed with any type of hose, but is herein shown applied to a hose which has been reinforced by the application of rings to the externa-l surface thereof to adapt it to withstand the high pressures employed in fluid operated vehicle braking systems. The reinforcing arrangement consists of the rings H- a which are applied to the outer surface of the hose. These rings are formed of some suitable metal, such as brass, which may be compressed to a less size. The rings H"L are originally of a size to ermit them to be slipped onto the hose. he are then suitably spaced on the hose an ameter by means of a reducing die or other suitable device.l After being reduced, the rings have an internal diameter slightlyless than the external diameter of the hose.

While in the drawings and inthe above description, applicant has disclosed but a single type of fitting, it is to be understood that certain modifications therein are contemplated and the invention therefore should be limited .merely by the'scope of the appended claims.

Having thus described my invention, what I claim is new and desire to secure by Letters Patent of the United States is:

1. In combination with a hose, a iirst element comprising a body portion lying adjacent one end of the'hose, an unsplit sleeve formed integrally with said body portion and lying around the hose end, said body portion being provided with a longitudinal opening, a second element Alying in said opening and terminating in a nipple which, engages in said hose end, the inner diameter of said .unsplit sleeve being less than the normal' outer diameter oi the hose, the hose being compressed between said nipple and said sleeve,

2. In combination with a hose, a member adapted to lie adjacent one end of the hose, an unsplit sleeve formed integrally with said member and adaptedto enclose one end of the hose` said member being provided with alongitudinal opening, a second member disposed and secured in said opening, said second member comprisin a nipple which is received in the hose en the inner diameter of said sleeve beingless than the norinal outer-diameter of thehose.

B. The method which consists in inserting be formed of a stem in one end of a section of hose and placing a sleeve around that portion of the hosean unspit sleeve and then stretching hose which receives the stem, and then insaid sleeve and reducing its inner diameter creasing the length of said sleeve and reto compress the hose between the sleeve and i0 ducing its inner diameter to compress the the stem. 5 hose' between the sleeve and .the stem. In witness whereof, I hereunto subscribe 4. Themethod whichconslsts in inserti my name this 2nd day of March 1923. a stem into a hose end, slipping over sai MALCOLM LOGHEAD. 

